Basic attributes

QP (I)

P = momentum of vector I.

QX (I)

x momentum component

QY (I)

y momentum component

QZ (I)

z momentum component

QE (I)

Energy

QM (I)

Mass (use QMASV0 for V0 mass; see below)

QCH (I)

CHarge

KCH (I)

NINT (QCH(I)) (be careful with quarks)

For charged tracks, the pion mass is assumed; the mass can be changed with QVSETM (see 9.2.13). For angles and more kinematics quantities, see 9.1.